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Mechanistic study assessing the immunological response of subjects after treatment with different formulations of sublingual immunotherapy. - Assessing the immunological response after sublingual immunotherapy

Mechanistic study assessing the immunological response of subjects after treatment with different formulations of sublingual immunotherapy. - Assessing the immunological response after sublingual immunotherapy

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2006-002123-17-GB
Enrollment
30
Registered
2012-01-23
Start date
2007-10-02
Completion date
Unknown
Last updated
2020-10-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Patients with seasonal allergic rhinitis to grass pollen MedDRA version: 14.1 Level: LLT Classification code 10039776 Term: Seasonal allergic rhinitis System Organ Class: 10038738 - Respiratory, thoracic and mediastinal disorders

Interventions

Trade Name: Alutard SQ Phleum pratense grass pollen allergen extract Product Name: Alutard SQ Phleum pratense Product Code: Alutard SQ Pharmaceutical Form: Oral drops, suspension Trade Name: Grazax

Sponsors

Imperial College London
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Male and female 18-65 years of age Written informed consent obtained before entering the trial A clinical history of grass pollen induced allergic rhinoconjunctivitis of two years or more requiring treatment during the grass pollen season A clinical history of severe rhinoconjunctivitis symptoms (interfering with usual daily activities or sleep), which remain troublesome despite treatment with anti-allergic drugs during the grass pollen season Positive Skin Prick Test (SPT) response (wheal diameter = 3 mm) to Phleum pratense Positive specific IgE against Phleum pratense (= IgE Class 2) Physical examination with no clinically relevant findings If pre-menopausal female of childbearing potential, the subject must test negative on standard urine pregnancy test and must be willing to practice appropriate contraceptive methods for the duration of the trial Willingness to comply with this protocol Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range F.1.3 Elderly (>=65 years) no F.1.3.1 Number of subjects for this age range

Exclusion criteria

Exclusion criteria: A clinical history of symptomatic seasonal allergic rhinitis and/or asthma due to tree pollen or weed pollen adjacent to the start of – and potentially overlapping - the grass pollen season A clinical history of significant symptomatic perennial allergic rhinitis and/or asthma caused by an allergen to which the subject is regularly exposed History of emergency visit or admission for asthma in the previous 12 months Use of an investigational drug within 30 days prior to screening Previous treatment by immunotherapy with grass pollen allergen within the previous 10 years History of anaphylaxis, including anaphylactic food allergy, bee venom anaphylaxis, exercise anaphylaxis or drug induced anaphylaxis History of angioedema Any of the following underlying conditions known or suspected to be present: Cystic fibrosis, malignancy, insulin-dependent diabetes, malabsorption or malnutrition, renal or hepatic insufficiency, chronic infection, drug dependency or alcoholism Ischemic heart disease or angina requiring current daily medication Or with any evidence of disease making implementation of the protocol or interpretation of the protocol results difficult or jeopardising the safety of the subject (e.g. clinically significant cardiovascular, serious immunopathologic, immunodeficiency whether acquired or not, hepatic, neurologic, psychiatric, endocrine, or other major systemic disease) Immunosuppressive treatment

Design outcomes

Primary

MeasureTime frame
Main Objective: To evaluate the immunological response in subjects with grass pollen induced allergic rhinoconjunctivitis after 8 weeks of once daily dosing with sublingual immunotherapy, either Alutard SQ Phleum pratense, 25,000 SQ-U, ALK Grass tablet Phleum pratense 25,000 SQ-T, or Aquagen Phleum pratense, 25,000 SQ-U. ;Secondary Objective: To evaluate the safety of the three different formulations by assessing adverse events recorded daily by the patient. ;Primary end point(s): To evaluate the immunological response in subjects with grass pollen induced allergic rhinoconjunctivitis after 8 weeks of once daily dosing with sublingual immunotherapy, either Alutard SQ Phleum pratense, 25,000 SQ-U, ALK Grass tablet Phleum pratense 25,000 SQ-T, or Aquagen Phleum pratense, 25,000 SQ-U.

Countries

United Kingdom

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026